Improvement in whiffletrees



UNITED STATES i 4'PATENT FFICE.

ANDREW J. DIBBLE, OF FRANKLIN, NEW YORK, ASSIGNOR TO HIMSELF AND DANIEL MILLER, OF SAME PLACE.

IMPROVEMENT IN WHIFFLETREE'S.

vSpecification forming part of Letters Patent N o. 154,380, dated August 25, 1874; application filed Apri125, 1874.

positions. Fig. 2 is a longitudinal section of one of the end or hook irons. Fig. 3 is a detail crosssection taken through the line :v m, Fig. 1.

Similar letters of reference indicate corresponding parts. ,y The invention will first be fully described, and then pointed out in the claim.

A are the end irons, which are made in the form of a socket, and have a hook, al, upon their forward side,the hooks al being cast in one piece with the body of the irons, and the cavity or socket:- extending outward past Vthe base of the hooks, as shown in Fig. 2. This construction is much stronger than when the hook is beyondl the end'of the wood,. and greatly diminishes the liability of breakage. In the end part of the end or hooi;` irons A, and directly opposite the end or pointy of the hook al, is formed 'a hole extending entirely through said irons, and inthe forward end of which is placed a'block', B, which is held out against the said hook by a coiled spring, G, the rear end of which rests against a screw, D, screwed into the rear end of said hole, as shown in Figs. 2 and 3. The hookdrons A are cast with an arm, a2, extending inward from the inner edge of their rear sides, to extend along the rear side of the whiletree, and serve as a rub-iron to protect the whiffietree from wear.

When the hook-irons A are to be attached to the ends of a double-tree they should be cast with the points of the hooks al upward, to bring them into proper position to receive the staple of the single-trees, and when they are to be attached to the ends of a single-tree they should be cast with the points of the hooks outward to bring them into proper po sition to receive the tug-eyes.

'E are the center-irons, which are cast in the form of a band, and with a staple, el, cast upon their rear sides.

When the center-irons E are to be placed upon the double-tree they should also have a staple or perforated lug orprojection, e2, cast upon their forward side to receive the hammer handle of bo1t,`by which they are secured to the tongue of the vehicle.. The center-irons E may also have straps or arms cast upon the Vend edges of their rear sides to receive the screws by which they are secured in place.

This construction enables the center-iron of the double-trees to be readily moved to one side of the center when it is desired to give one horse an advantage of leverage. f I am aware it is not new to provide hookirons for whifdetrees with Va spring-pressed block to prevent the trace from becoming cas,-

ually detached, and I, therefore, made noclaim to such, broadly; but What .I do claim as of my invention herein 1s The'hook-iron A al, provided near its outerend with a transverse opening in which is adapted to slide a'block, B, in combination with said block B, supporting-spring C, and adjusting-screw D, constructed and applied as and for the purpose specified.

ANDREW J. DIBBLE.

Witnesses G. H. GOODMAN, S. A. MANWARING. 

